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Finding the Fourth Proportional to 20,604.29, 30,906.36 and 7,453.53

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Solution

The fourth proportional to 20,604.29, 30,906.36 and 7,453.53 is: 11,180.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,604.29 : 30,906.36 = 7,453.53 : x
  2. Step 2: Convert to fraction form
    20,604.29/30,906.36 = 7,453.53/x
  3. Step 3: Cross multiply
    20,604.29x = 30,906.36 × 7,453.53
  4. Step 4: Simplify right side
    20,604.29x = 230,361,481.45
  5. Step 5: Solve for x
    x = 230,361,481.45/20,604.29
  6. Step 6: Final answer
    x = 11,180.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.